GM 19420455 Single Beehive Valve Spring Set of 16

IMPORTANT NOTE: THIS PART REPLACES GM-12499224

GM .570" lift single beehive valve spring set. This valve spring set is a performance replacement for stock LS valve springs, commonly known as the "blue spring", or the "yellow spring". These spring set uses your stock factory seats, seals, retainers and locks. These springs are a good choice for stock replacement and mild street performance usage with stock rockers arms up to .570" lift.

Outer Spring Diameter 1.290" O.D.
Install at 1.800" for 90 lbs seat pressure
Open Pressure 295 lbs at 1.250"